Audio port

A design of deep FIFO for video and audio delay line device is introduced. The deep FIFO is implemented by using SDRAM instead of dual port RAM, and a dual port SDRAM controller is implemented by FPGA.

介绍视音频延时器用大容量FIFO的设计，大容量FIFO的设计采用了SDRAM代替双口RAM，并采用FPGA设计双口SDRAM控制器。

The paper introduces the basic structure and operating principle of a new portable music therapeutic instrument. Connected to PC via USB port, the instrument can cause therapeutic current to be visualized. The application of Class-D audio power amplifier makes power dissipation lower.

一种新型便携式音乐治疗仪的基本结构及工作原理，采用UBS接口技术与PC机相连，便于实现治疗电流的可视化，使患者更放心地接受治疗，而D类音频功率放大器的应用使得整机功耗更低。

This article has described the features of this serial port. And it provided an application in front terminal of the high quality audio solution, including selecting of the audio front terminal, connection design of system hardware and choosing parameters of various registers.

本文介绍了这种串口的原理和结构特点，重点介绍了它在高音质音频前端中的一种应用方案，其中包括音频前端的选择、系统的硬件连接设计以及各种寄存器参数的选取。